Pipeline and Haz. Matls. Safety Admin., DOT
international transportation as well as
domestic transportation. Those preceded by the letters  - NA -  are associated with proper shipping names not
recognized for international transportation, except to and from Canada.
Identification numbers in the  - NA9000 - 
series are associated with proper shipping names not appropriately covered
by international hazardous materials
(dangerous
goods)
transportation
standards, or not appropriately addressed by international transportation standards for emergency response information purposes, except for
transportation between the United
States and Canada. Those preceded by
the letters  - ID -  are associated with
proper shipping names recognized by
the ICAO Technical Instructions (IBR,
see Section 171.7 of this subchapter).
(f) Column 5: Packing group. Column 5
specifies one or more packing groups
assigned to a material corresponding to
the proper shipping name and hazard
class for that material. Class 2, Class 7,
Division 6.2 (other than regulated medical wastes), and ORM-D materials, do
not have packing groups. Articles in
other than Class 1 are not assigned to
packing groups. For packing purposes,
any requirement for a specific packaging performance level is set out in
the applicable packing authorizations
of part 173. Packing Groups I, II and III
indicate the degree of danger presented
by the material is great, medium or
minor, respectively. If more than one
packing group is indicated for an
entry, the packing group for the hazardous material is determined using
the criteria for assignment of packing
groups specified in subpart D of part
173. When a reevaluation of test data or
new data indicates a need to modify
the specified packing group(s), the data
should be submitted to the Associate
Administrator. Each reference in this
column to a material which is a hazardous waste or a hazardous substance,
and whose proper shipping name is preceded in Column 1 of the Table by the
letter  - A -  or  - W - , is modified to read
 - III -  on those occasions when the material is offered for transportation or
transported by a mode in which its
transportation is not otherwise subject
to requirements of this subchapter.

Section 172.101

(g) Column 6: Labels. Column 6 specifies codes which represent the hazard
warning labels required for a package
filled with a material conforming to
the associated hazard class and proper
shipping name, unless the package is
otherwise excepted from labeling by a
provision in subpart E of this part, or
part 173 of this subchapter. The first
code is indicative of the primary hazard of the material. Additional label
codes are indicative of subsidiary hazards. Provisions in Section 172.402 may require
that a label other than that specified
in Column 6 be affixed to the package
in addition to that specified in Column
6. No label is required for a material
classed as a combustible liquid or for a
Class 3 material that is reclassed as a
combustible liquid. For  - Empty -  label
requirements, see Section 173.428 of this subchapter. The codes contained in Column 6 are defined according to the following table:
LABEL SUBSTITUTION TABLE
Label code

Label name

1 ................................................
1.1 1 ...........................................
1.2 1 ...........................................
1.3 1 ...........................................
1.4 1 ...........................................
1.5 1 ...........................................
1.6 1 ...........................................
2.1 .............................................
2.2 .............................................
2.3 .............................................
3 ................................................
4.1 .............................................
4.2 .............................................
4.3 .............................................
5.1 .............................................
5.2 .............................................
6.1 (inhalation hazard, Zone A
or B).
6.1 (other than inhalation hazard, Zone A or B) 2.
6.2 .............................................
7 ................................................
8 ................................................
9 ................................................

Explosive
Explosive 1.11
Explosive 1.21
Explosive 1.31
Explosive 1.41
Explosive 1.51
Explosive 1.61
Flammable Gas
Non-Flammable Gas
Poison Gas
Flammable Liquid
Flammable Solid
Spontaneously Combustible
Dangerous When Wet
Oxidizer
Organic Peroxide
Poison Inhalation Hazard
Poison
Infectious substance
Radioactive
Corrosive
Class 9

1 Refers

to the appropriate compatibility group letter.
2 The packing group for a material is indicated in column 5
of the table.

(h) Column 7: Special provisions. Column 7 specifies codes for special provisions applicable to hazardous materials. When Column 7 refers to a special
provision for a hazardous material, the
meaning and requirements of that special provision are as set forth in
Section 172.102 of this subpart.

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